今年份卷我都無乜時間剩 paper 1剩<15 mins paper 2剩> mins
不過我做果時成日會覆睇題目睇下有無睇漏野 每條數都會計兩次
化學艾維斯2018-04-23 14:39:29
睇返#331
化學艾維斯2018-04-23 14:40:47
依家餓到PK 去食野先
我等埋攞到P1B卷再一次過出LQ solution啦
兩萬蚊杯水2018-04-23 14:41:35
Lq條Teflon describe this polymerisation essay 4+1 個4分會係咩 好驚攞唔足
1)addition polymerisation
2) def. of addition polymerisation( without elimination of small molecules)
3) 有C=C bonding in monomer
但第4分真係諗唔到 隊哂d monomer repeating unit , eqt落去 同埋寫埋C=C becomes saturated C-C bond
無腳鳥🐤2018-04-23 14:42:54
拎4MC要岩幾多題?
化學艾維斯2018-04-23 14:48:41
有C=C bond
under suitable catalyst & condition可做addition polymerisation
monomer join together to form polymer chain (...N-N-N...)
chains attract each other by vdw force -> form a polymer
equation:n F2C=CF2 -> (F2C-CF2)n